Adjustable shaft mounting



Nov. 23 i926. 1,608,158`

H. F. BENSON ADJUSTABLE SHAFT MOUNTING Original Filed Jan. 28. 1921 afn y Z.

n /a 5, f/ 4i fa '4.6- 4g I 2/ ns l ,A i However this known type of vertical ad. justment for the shaft has the disadvantage' Patented Nov. 23, 1926.

UNITEb STATES PATENT OFFICE.

MARRY r. BnNsoiv, 'or Hormon, MASSACHUSETTS; AssIeNon 'ro won'rnme'roN PUMP AND MACHINERY oonronA'rIoN, or NEW Yoan, N. Y., A coaPonA'rIoN or VIRGINIA.

i ADJUSTABLE SHAFT MOUNTING.

Original application tied January This .invention-relatesito a driving head,

i especially for deep"v well pumps and the like head, ank axiallyl movable ke drivin p i ting re ation to the shaft while, at the same time permittingthe aforesaid vertical adlanu wherein some provision must be made for vertical adjustment of the load carrying 'ma f be` obtained. 1

Iii heads of this kind it has been customar .diustin nut threaded upon the upperend of the aft and sustained on the driving securing the part of thesaid hea in fixed rotajusting movement.

that it is only the weight of the rotating parts that keeps the shaft from moving upward,a liabilit which occurs at times in various types o deep well pumps.

Therefore it is a feature of this invention4 to Provide a driving head wherein the vertical shaft is adjustable axially in either or down direction but is positively held 1n any adjusted position against movement in either direction. I

A further object resides in accomplishing the aforesaid adjustment and locking by screw and nut mechanism, and particularly with a differential screw and nut arrange nient whereby very accurate adjustment may be' secured without undue strain and friction on the adjusting parts.

For a full understanding of the invention, a detailed description of a construction embodying the invention in a preferred form will now be given in connection with the accompanying drawin s forming a art of this specification, an the features orming the invention then specifically pointed out i in the claims.

to suspend the vertical shaft from. an'

28,1921, Serial No. 440,605. Divided and this application vled July A 15, 1924. Serial lo. 728,095. l n

the present invention is preferably combined,`

but the invention is applicable also to apparatus other than pumps and with shaft bearings; of other suitable, form.

` the construction shown, the well head "is mounted onthe usual foundation plate 1 receiving the upper end of the well casing 2 and mounting the frame 3, having the upper and lower bed plates 4 and 5, the lower bed plate 5 receiving the discharge T 6 having the outlet 7 and the head 8 of said T being provided .with a stufling box 9 through which the vertical shaft 10 extends,

On the upperbed plate 4 is a member 11 having' an opening 12 through which the shaft 10 projects. The member 11 receives the base 13 of a load sustaining member A havin'g the cylinderical side wall 14 closed at one end by the bottom 15 through the central boss 16 ofl which shaft 10 extends; a tube 17 is fitted in an oil-ti htl manner into the bottom-15 and surroun s the shafty 10- so that an annular lubricant reservoir is thus provided having outer and inner walls 14 and 17, respectively, clearance being all `lowed between the shaft 10 and the tube 17.

The upper end of the shaft 10 is threaded as shown at 18, and below this threaded tion is a key 19 which is engaged by the way 20 of a sleeve 21, the upper end 22 of which is also threaded but lwith finer threads than the portion 18 of the shaft 10; a hollow skirt 23, formed integral with the sleeve 21, telescopes over the tube 17 forming the inner wall of the lubricant reservoir and extends well down into the' lubricant reservoir and, at its bottom` is provided with a shoulder 24. Slipped onto the sleeve 21 and. resting on shoulder 24 is a ball race 25 which co-operatcs with a race v26 on the cylindrical side wall 14, and with the balls 27 between the races forms the lower radial bearings. Seating on the race 25 is a spacing sleeve 28 which fixes the position of an end thrust ring 29, said end thrust ring 29 co-operating with ball races 30 and 31 on each side thereof and with sets of balls 32 and 33 to form axial or end thrust bearings; said races 30 and 31 having spherical surfaces resting on oppositely disposed spherical seats 34 and 35 of a thrust cage 36 carried on a shoulder 37 in the cylindrical wall 14. On the upper side of the cage 36 is a rin 37* carrying ball race 38 co-o rating with all race 39 and balls 40 to orm the upper radial bearings; the ball race 39 being spaced. from the race ring 29 by a sleeve 41. A sleeve 42 is placed against the race 39 and over this is the cover plate 43 held by bolts 44 and which rests against the ring 37'* to hold the ball race 38 and cage 36 in position.

Keyed to the upper end of the shaft 10,

as at 45 is .the hub 46 of a pulley 47 extend,

ing down over the lubricant reservoir and forming an enclosure therefor, the'inner side of the hub 46 resting on the upper end of the sleeve 42 to hold the bearing races carried by the hollow sleeve 21 in position there on, the pulley being held on the shaft 10 by a nut-48 screwed onto the upper end of the sleeve 21 and a lock washer `49.

The upper end 22 of the sleeve 21 carries a nut 50 also having threaded, engagement with the threaded portion 18 of the shaft 10. The threads on the upper end 22 of sleeve 21 are finer than the threads on the shaft end 18 with the result that turning the nut 50 to the ri dht or left raises or lowers the shaft 10 for a justment. A jamb nut 51 retains the nut 50 in adjusted position. l

It will be obvious that the side thrust of a belt driving the pulley 47 is absorbed by the u per and lower radial bearings, while end t rust on the shaft 10 is taken up by the two end thrust bearings, down thrust load being sustained by the thrust bearing cage 36 bearing on the shoulder 37 of the load sustaining member A while any upward thrust is taken care of against the cover plate 43.

In adjusting the shaft 10, the lock nut 51 is just backed away from the nut 50 after which turning of the nut 50 will adjust the shaft 10 up or down, as desired, by Ireason of the difference in the threads on the two parts 18 and 22; once the proper adjustment 1s secured the lock nut 51 is again screwed against nut 50.

It will be seen that my invention provides for adjusting the shaft with much less friction and wrench resistance than in previous constructions and that the shaft is held by the adjustment nut against movement in either axial direction, and thus forms a steadying means coacting `with the thrust bearing to hold the shaft steady in adjusted position and thus secure the most efiicient operation of the shaft driven mechanism.

This application is a division of ap lication #440,605, led Jan. 28, 1921 an now Patent #1,519,391.

What I claim is:

1. In a driving head for vertical loadl shafts, sustaining mechanism including a shaft receiving member supporting the shaft, a shaft in keyed rotating relation with said member but movable axially with respect thereto, and an adjusting'g` member for the shaft secured to said mechanism against axial movement during operation of the pump and connected to the shaft for rotation therewith.

2. In a driving head for vertical load shafts, sustaining mechanism including a shaft receiving member supporting the shaft, a shaft in keyed rotating relation with Said member but movable axially'with respect thereto, and an ad'usting member for raising or lowering the s aft in its receiving member connected to the shaft for rotation. therewith' and secured to' said mechanism against axial movement during operation of the pump but adapted to be moved axially thereon when adjusting the shaft.

3. In a driving head for vertical load shafts, sustaining mechanism including a shaft receiving member supporting the shaft, a shaft in keyed rotating relation with said member but movable axially with respect thereto, and an adjusting' member screw threaded to said mechanism, and to Said shaft to vary the relation between the shaft and shaft receiving member axially.

4. In a driving head for vertical load shafts, sustaining mechanism including a shaft receiving member supporting the Shaft, a Shaft in keyed rotating relation with said member but movable axially with respect thereto, and an adjusting member screw threaded to said mechanism and to` said shaft to vary the relation between that` shaft and shaft receiving member, the threads between the shaft and adjusting member and the adjusting member and mechanism having a differenti;` lfratio lwhereby the shaft can be moved tjily.

5. In a driving head for vertical load shafts, sustaining mechanism including a shaft receiving member supporting the shaft, a shaft in keyed rotating relation with said member but movable axially with respect thereto, and an adjusting member threaded to the sustaining mechanism with threads of onepitch and to the shaft with l threads of another pitch to produce a differential adjusting movement of the shaft when the adjusting member isturned.

6. In a driving head for vertical load shafts, sustaining mechanism including a shaftreceiving member supporting the shaft, a shaft in keyed rotating relation with said member but movable axially with respect thereto, and an adjusting member threaded to the mechanism with threads of fnepitch and to the shaft with threads of coarse pitch to produce a differential adjusting movement of the shaft when the adjustin member is turned.

In a driving head for vertical shafts, the combination with a thrust bearing con-V structed to support upward or downward thrust, of a shaft-receiving member carried by saidv thrust bearing, a shaft in keyed rotating relation with said member but movable axially with respect thereto, and

.an adjusting member for raising or lowering the shaft 1n its receiving member secured to said member against axial movement during operation of the pump and connected to the shaft for. rotation there- With.

8. In a driving head for vertical shafts, the combination with a thrust bearing constructed to support upward or downward thrust, of a shaft-receiving. member carried by said thrust bearing, a shaft in keyed rotating relation with said member but movable axially with respect thereto, and an adjusting member screw threaded t-o said member and to said shaft to vary the relation between the shaft and shaftreceiving member, the threads between the shaft and adjusting member and the adjusting mem-l thrust., of a shaft-receiving member carriedv Yby sa1d` thrust bearing, a shaft in keyed rotating relation with said member but movable axially with respect thereto, and an adjusting member threaded to the member withthreads of ne pitch, and to the shaft with threads of coarse pitch to produce a differential adjusting movement of theA shaft when the adjusting member is turned.

In testimony whereof, I have hereunto set my hand,

HARRY F. BENSON. 

